Means for accelerating the flow of medium through the radiating-circuits of steam-heating systems.



E. H. sou).

MEANS FOR ACCELERATING THE FLOW 0F MEDIUM THROUGH THE RADIATING CIRCUITS0F STEAM HEATING SYSTEMS.

1,16g9?fi6 APPLICATION FILED IULY3I. i912. Patented Dec. 7,

4 SHEETS-SHEET 1.

E. H. eoIb.

MEANS FOR ACCELERATING THE FLOW OF MEDIUM THROUGH THE RADIATING CIRCUITS0F STEAM HEATING SYSTEMS.

APPLICATION FILED JULY 31. I912.

q fifio Patented Dec. 7, 1915,

6 u I Z. 56 4 SHEETS SHEETZ E. H. GOLD. MEANS FOR ACCE LEBATIN G THEFLOW 0F MEDIUM THROUGH THE BADIATING CIRCUITS 0F STEAM HEATING SYSTEMS.

APPLICATION FILED JULY'3I. I912.

Llfi fifi. Patented Dec. 7, 1915.

4 SHEETS-SHEET 3- COLUMBIA PLAHMMPH Cb.,wuumn1oN, n. c.

E. H. GOLD.

MEANS FOR ACCELERATING THE FLOW 0F MEDIUM THROUGH THE RADIATING CIRCUITS0F STEAM HEATING SYSTEMS.

APPLICATION FILED JULY 31. I912.

1,16,?65 Patented Dec. 7, 1915.

4 SHEETS-SHEET 4.

i may COLUMBIA PMNOORAPH CO..WASHINGTON. D. c.

EGBER'J. H. GOLD, OF CHICAGO, ILLINOIS.

MEANS FOR ACCELERATING THE FLOW OF MEDIUM THRGUGH. THE RADIATING-CIRCUITS 0F STEAM-HEATING SYSTEMS.

Application filed July 31, 1912.

To all whom "it may concern:

Be it known that I, Eonnnr H. GOLD, a citizen of the United States,residing at Chicago, in the county of Cook and State of Illinois, haveinvented certain new and useful Improvements in Means for Acceleratingthe Flow of Medium Through the Radiating-Circuits of Steam-HeatingSystems, of which the following is a specification.

My invention relates to steam heating systems and the principal objectof the inven tion is to provide novel means for causing the medium topass more rapidly through the radiating circuit or circuits than is thecase when the circulation depends entirely upon the pressure of steamexerted at the inlet end of the radiating clrcult.

The invention has in view especially the conditions which prevail in theheating of.

railway cars, and is designed more particularly as an lmprovement uponthe type of car heating systems employing steam at low pressure, forexample at substantially atmospheric pressure. In a system of this typethe steam taken from the high pressure source, the steam train pipe, isreduced by means of an automatically operated reducing valve and thencirculates through a steam coil extending lengthwise through the car,the reducing valve being controlled by a thermostat located at theoutlet end of the coil. The steam at the inlet end of the coil being ata pressure not greatly exceeding atmospheric pressure it exertscomparatively little force upon the medium in the coil so that if thesteam circuit is a long one and the amount of condensation considerablethe circulation is liable to be more sluggish than is desirable.

My present invention provides for the arrangement in the feed pipe ofthe radiator, beyond the controller, of a nozzle of constrictedcross-sectional area which gives the infiowing steam the form of a jethaving some velocity and in providing a branch pipe or conduit leadingfrom the neighborhood of the jet to the return end of the coil so thatthe partial vacuum developed by the jet acts upon the medium in thereturn end of the radiator.

The invention provides further a device of one sort or another in thedischarge end of the radiating coil between the branch pipe and theatmosphere which allows the outflow of water of condensation While pre-Specification of LettersPatent.

may be.

Patented Dec. '17, T9715. Serial No. 712,564.

structions, arrangements and devices which are shown in the drawingshereto annexed and which will be hereinafter more fully described andclaimed. 7

The invention is illustrated in certain preferred embodiments in theaccompanying drawings, wherein f v Figure 1 1s a dlagrammatlc vlew ofthe system as a whole; Fig. 2, a longitudinal sectional view of apreferred form of automatic controller; Fig. 3, a sectional. plan of thefour-way valve shown in Fig. 1; Fig. 4-, a longitudinal sectional view01" the jet-forming device; Figs. 5, 6, 7 and 8 are similar viewsillustrating different forms of fittings which may be employed in thedischarge end of the radiating coil for permitting the outflow ofcondensation while preventing. the inflow of air at such time as suctionis being exerted by the jet; Fig. 9, a diagrammatic view illustratingone application of my in vention to a system employing two radiatingcoils arranged so that they are in series when both are in service; andFig. 10 a similar view of a modified arrangement for thesame sort ofmultiple coil system.

Like characters designate like parts in the several figures of thedrawings.

Referring to the drawings, A designates the flooring of the car, B thetrain pipe, C

the thermostatic controller, D the radiating coil, E a fourqvay valvethe function of which is to cut out the; radiator and shortcircuit thesteam to the thermostat of the controller, F (Fig. l) the jet-formingfitting in the feed pipe of the radiator, G, G", G and G (see Figs. 5 to8, inclusive), dilferent forms of fittings interposed in the return endof the radiator, and H the pipe connecting fitting F with the fitting G,etc., as the case The feed pipe for the radiator consists, in the systemillustrated in Fig; l, of the pipe sections 25, 26, 27, 28. The returnconduit of the radiating coil is made up of the pipe sections 29, 30 and31.

Any suitable form of vapor regulator may be employed. Fig. 2 shows afamiliar form of device, 32 designating a casing divided into a highpressure chamber 33 connected with the train pipe B by the pipe section25, and 34 a low pressure chamber from which 7 leads the feed pipesection 26, these chambers communicating by a port controlled by a valve36 the stem of which 37 is connected with a bell crank 38 pivoted to aWeb 39 formed on the under side of casing 32.

40 designates a thermostat located within a casing 41, and 42 anoperating rod which bears on the top of the thermostat and is connectedwith the bell crank 38. The return pipe section 31 communicates with achamber in the casing 43 formed on the web 39. Casing 41 is secured'to.the end of a pipe 44 tapped into the casing 43.

The four-way valve E consists of a casing 45 divided into four chambers:46 to which feed pipe section 26 leads, 47 communicating with feed pipesection 27, 48 to which the return pipe section 30 leads, and 49 Whichcommunicates with the return pipe section 31. These chambers are putinto communication with each other by means of the rotary valve 50'having a stem 51' and handle 52; the bottom of the valve being in theform of a disk 53 havinga perforation v54 communicating with the drippipe 55 when the valve is in position to put chamber in communicationwith chamber 48. and chamber 46 in communication Wltll' chamber 49, thatis when the radiating coil is cut out'and the steam supplyshort-circuited to thermostat 40.

V The jet-forming device F consists of a T- fitting 56 into one end ofwhich the pipe 28 V is threaded anda nozzle fitting 57 into which thefeed pipe section 27 is threaded. The

suction pipe H leads from the branch 58 of fitting 56 and the bore ofthe fitting is preferably narrowed beyond this pointby thick-.

preventing or checking the inflow of air while permitting the outflow ofwater of condensation.

In Fig. 5 the fitting G is shown as formed 7 with the bulge ordepression 60 and with the web 61 which projects down into thisdepression. The water of condensation outflowing from the radiator formsa water seal which prevents the inflow of air back{ I wardly through theoutlet end of the coil thereby directing the suction against the mediumsteam and water of condensationin the coil.

In Fig. 6 the fittingG is provided with a port 62 adapted to be closedby a pivoted gravity valve 63 which is drawn to its seat by the suctionproduced through; the pipe H. In Fig.7 a fitting Gr is shown in which:the branch 64 to which pipe H is connected hasthe extension 65 withinthe fitting, the extension preferably beingv fiared and having itsopening toward the pipe section 29. The. water of condensation canescape through the space around the extension 65. The suction in pipe His however, to a very large extent at least, directed against the mediumin the radiator.

A somewhat similar arrangement is shown in Fig. 8 in which the fittingis formed with the backwardly curved downwardly projecting web 66 andpreferably also with the upwardly projecting web 67.

The operation of the system above described is as follows: High pressuresteam passes from the train pipe B through the pipesection 25 into thehigh pressure chamber 33 and thence, past valve 36, into the lowpressure chamber 34, pipe section 26, chambers 46, 47 of the four-wayvalve, pipe section 27' and into the nozzle 57. The constriction of thebore of the nozzle delivers V the steam into the fitting 56 in the formof The vacuum operates to suck the water and s1 steam from the radiatingcoil D and thus hastens the circulation through the coil and preventsany pocketing or" water or air. By the employment of any of the fittingsG, G G and G the suction produced by the jet is directed entirely or toa very large extent against the medium in the coil D. If some suchcontrivance as is provided by these fittings were not used a part of thesuction produced by the jet would be wasted because the jet would insuch case act to suck up air through the outlet end of the system.

atmospheric pressure in the coil B is ef-.

fected in this manner.

The radiator is put out of service by turning the valve 50 of thefour-way valve de vice F so as to put chamber 47 in communication withchamber 48, chamber 46 in communication with chamber 49 and drip port 54in communication with the drip pipe 55. The radiator drains through port54 and pipe 55 and steam passing the reducing valve is short-circuitedto the thermostat,-

the valve being automatically adjusted so as to allow just enough steamto pass to keep the thermostat hot.

In Fig. 9 I have shown one application of my present invention to whatmay be termed a multiple coil heating system in which two dischargepipes by means of four-way valves E, E similar in construction to thefourway valves previously described, the valves being connected by asection of pipe 70. The inlet end of each coil is provided with ajet-forming device F connected by the branch pipe H with one of thefittings G,

etc.

In Fig. 10 the arrangement is the same except that only one of thecoils,'the coil D is provided with the jet nozzle F, the branch pipe Hextending to the return end of the other coil D*. If both coils aresupplied the medium flows through them in serice as described above inconnection with Fig. 10. In such case the steam circuit is a long oneand hence the need for additional means for promoting circulation isenhanced. If only one of the coils is in service this means becomesineffective, but the suction developed is utilized for ridding the othercoil of water of condensation through the drainage outlet (54-, 55, Fig.3) which is opened when the valve E is set so as to cut out the coil DlVhile I have described my invention in certain preferred embodiments,it will be readily understood that modifications might be devisedwithout departure from the in vention. Therefore, I do not wish to beunderstood as limiting the invention to the particular devices,arrangements and constructions described and claimed.

I claim:

1. In a steam heating system the combination with a source of supply ofsteam, of a system of radiating pipes comprising two coils, a switchingmechanism whereby the steam may be circulated through one 01"? saidcoils alone or through both the coils in seri es and which in the firstnamed alternative provides a drainage outlet for the coil cut out, anozzle in the inlet end of one of said coils, and means constituting aconduit leading from a point adjacent said nozzle to the return end ofthe other coil.

2. In a steam heating system the combination with a source of supply ofsteam, of a system of radiating pipes comprising two coils, apparatuswhereby one of said coils may be cut off from the source of supply andput in communication with the outer air, a conduit leading from a pointadjacent the intake of that coil receiving steam to a point adjacent theoutlet of the coil cut out, and means actuated by steam passing to thecoil receiving steam for creating a movement 01 fluid in the coil cutout.

3. In a steam heating system the combination with a source of supply ofsteam, of a system of radiating pipes comprising a plurality of coils,apparatus for cutting off communication betweenthe source of supply andcertain of said coils and putting them in communication with the outerair while maintaining such communication with a source of steam supplyas to the remaining coils, and means actuated by steam passing to thosecoils not cut out for creating movement of fluid within the coils cutout.

-l. In a steam heating system the combination with a source of supply ofsteam, of a system of radiating pipes comprising a plurality of coils, aswitching mechanism operable to cut oil communication between the sourceof supply and certain of said coils while maintaining such communicationwith respect to the remainder of said coils, said mechanism beingadapted in such case to open communication between both ends of thecoils cut out and the outer air, and means actuated by the steam passingto the coils receiving steam whereby movement of fluid is set up in thecoils cut out.

5. A heating system comprising a substantially horizontally disposedradiating pipe coil, portions of the ends of which lie adjacent to eachother, the discharge end being open to the atmosphere, means forintroducing steam into said coil and maintaining the same atsubstantially atmospheric pressure consisting of an inlet valve at oneend of the coil and a thermostat controlling the same which is arrangedat the open discharge end of the coil, a pipe providing a freeunobstructed by-pass between the adj acently disposed portions of theinlet and discharge ends of the coil, a steam nozzle in the inlet end ofthe coil to produce a steam jet adapted to exert suction through saidby-pass directly upon the medium in the discharge end of the coil, andmeans in the discharge end of the coil between said by-pass and theatmosphere which permits the outflow of water of condensation but checksinflow of air while the system is in Witnesses:

L. A. FALKENBERG, G. Y. SKINNER.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. C.

